HOUSTON, Dec. 2 (Xinhua) -- The suspect in the deadly shooting attack at the Fort Hood U.S. Army base was charged Wednesday with 32 specifications of attempted premeditated murder, military officials said.

    The charges are added to the 13 premeditated murder charges filed against Army psychiatrist Nidal Malik Hasan for the 13 people who were fatally shot on Nov. 5 at Fort Hood in central Texas.

    The 32 specifications of attempted premeditated murder are related to 30 soldiers and two civilians injured in the shooting, a Fort Hood news release said, adding that more charges are possible.

    The latest charges come less than 24 hours after Hasan's civilian attorney was notified that the Army wants a formal psychiatric review to determine whether Hasan can stand trial on murder charges as well as his mental state at the time of the shooting.

    The results of the psychiatric review, which involves psychological testing and interviews by a board of mental health professionals, could prevent Hasan from being sent to death row or even being tried at all, although those scenarios are unlikely, experts said.

    Hasan remains in intensive care at a San Antonio military hospital, paralyzed from the waist down after being shot by two civilian police officers during the shooting rampage at the Fort Hood base.

    Hasan, 39, allegedly opened fire on Nov. 5 with two handguns on unarmed soldiers who were preparing for deployments to Iraq and Afghanistan at a soldier readiness area at Fort Hood, the country's largest military installation.

    The shooting spree, which killed 13 people and wounded more than 30, has been described as the deadliest mass shooting at a U.S. military installation.